10 Pack Syringe Filter Sterile PES, 0.22µm, 33mm, Individually Packed

I used these filters in order to test phytoplankton cultures for nutrient levels prior to harvesting. The filter did a great job at filtering the phytoplankton while also keeping a good flow rate. The luer lock connection is not very tight but does the trick. The price is slightly high for what it is, but if the purpose allows, they can be flushed and reused.

Exactly as described, works great no complaints.

Perfect

10 Pack Syringe Filter Sterile love them

They work as expected. There was some leakage due to liquid pressure but if liquids are pushed through slowly that works better.

I can't really think of one thing I really have positive to say considering there's much better filters (same diameter, also 0.22μm, same cost). All these filter are heavy particles. A coffee filter would do an equally sufficient job. I went through 4 and still didn't end up with the same quality results as with 1 filter vs the filters I normally use (which I'm able to use a few times if I really need to). I don't know why these have such high reviews, honestly. They do not filter properly, period. This wasn't a bad one or two. I really question whether it's filtering bacteria and other particulate, dyes, etc. that it should be able to. These are incapable of removing the color from what I filter after 4 filters, and those are larger molecules than bacteria. I've been using filters like these in all different brands for about 10 years and I think these are by far the absolute worst I've come across. I had to get right back in on here and order the ones I would normally. So a waste of money, useless, and potentially dangerous depending on what you use it for. The only reason I'm bothering to review these is because they have great reviews for some reason and I noticed some people are trusting these to filter for IVDU. These are dumpster material. You are not getting all that you think you are getting out. The white plastic ones really any brand on here are so much better.

3stars for packaging and durability however product is not easy to use and wastes liquid to a great extent. I am in nursing research and know how to use such items, this one is not recommended by me

Have used these multiple times and they've always worked really well. However, the last batch I had were clearly defective. They were absolutely impossible to push the the oil i was filtering though the filer. As I said, I've used these and never had an issue. I went through 30 filters trying to find one that I could actually use. My whole filtering process should have taken no more than 5 or 6 from start to finish. Not sure what the problem was but even with using a caulking gun to add some extra leverage, I still could barely get a drop at a time through these. Very frustrating! (Update) After my initial review, the seller promptly reached out and shipped me replacement filters at no cost to me. The replacements were exactly as they should be. They worked very well with no further issues. As I said in my previous review, I've have used these on multiple occasions and they've been great. The replacements worked perfectly.